Currently, if you sell fortnight on Play Store, you can't sell Fortnight skins through the Fortnight app, it has to go through Play store.
That wouldn't be a big deal, except it's hard as hell to install an app on an android phone except through the Play store.
If Epic could publish a link on its websight that you could click to install Fortnight, this would not be a case
But, since the OS make it all but impossible to install apps outside the store, they have an effective monopoly.
That is easy to prove through stats alone. Virtually 100% of apps go through the store.
Since they have a monopoly, forcing payments through the store is arguably anti competitive.
I think good ruling.